teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5994:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5994:  * documentation coming with Dive4Elements River for details.
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.artifacts.model.sq;
sascha@3281: 
teichmann@4001: import java.util.Comparator;
teichmann@4001: 
sascha@3281: public class Sieve
sascha@3281: {
teichmann@3992:     public static final double EPSILON = 1e-6;
sascha@3281: 
teichmann@4001:     public static final Comparator<Double> DIAMETER_CMP =
teichmann@4001:         new Comparator<Double>() {
teichmann@4001:             @Override
teichmann@4001:             public int compare(Double a, Double b) {
teichmann@4001:                 double diff = a - b;
teichmann@4001:                 if (diff < -EPSILON) return -1;
teichmann@4001:                 if (diff >  EPSILON) return +1;
teichmann@4001:                 return 0;
teichmann@4001:             }
teichmann@4001:         };
teichmann@4001: 
teichmann@3992:     protected double diameter;
teichmann@3992:     protected double load;
sascha@3281: 
teichmann@3992:     /**
teichmann@3992:      * Constructs a new instance.
teichmann@3992:      */
sascha@3281:     public Sieve() {
teichmann@3992:         this(Double.NaN, Double.NaN);
sascha@3281:     }
sascha@3281: 
teichmann@3992:     public Sieve(double diameter, double load) {
teichmann@3992:         this.diameter = diameter;
teichmann@3992:         this.load = load;
sascha@3281:     }
sascha@3281: 
teichmann@3992:     /**
teichmann@3992:      * Gets the diameter for this instance.
teichmann@3992:      *
teichmann@3992:      * @return The diameter.
teichmann@3992:      */
teichmann@3992:     public double getDiameter() {
teichmann@3992:         return this.diameter;
sascha@3281:     }
sascha@3281: 
teichmann@3992:     /**
teichmann@3992:      * Sets the diameter for this instance.
teichmann@3992:      *
teichmann@3992:      * @param diameter The diameter.
teichmann@3992:      */
teichmann@3992:     public void setDiameter(double diameter) {
teichmann@3992:         this.diameter = diameter;
sascha@3281:     }
sascha@3281: 
teichmann@3992:     /**
teichmann@3992:      * Gets the load for this instance.
teichmann@3992:      *
teichmann@3992:      * @return The load.
teichmann@3992:      */
teichmann@3992:     public double getLoad() {
teichmann@3992:         return this.load;
teichmann@3992:     }
teichmann@3992: 
teichmann@3992:     /**
teichmann@3992:      * Sets the load for this instance.
teichmann@3992:      *
teichmann@3992:      * @param load The load.
teichmann@3992:      */
teichmann@3992:     public void setLoad(double load) {
teichmann@3992:         this.load = load;
teichmann@3992:     }
teichmann@3992: 
teichmann@3992:     public boolean matchesDiameter(double diameter) {
teichmann@3992:         return Math.abs(diameter - this.diameter) < EPSILON;
teichmann@3992:     }
teichmann@3992: 
teichmann@3992:     public boolean hasDiameter() {
teichmann@3992:         return !Double.isNaN(diameter);
sascha@3281:     }
teichmann@7710: 
teichmann@7710:     public boolean hasLoad() {
teichmann@7710:         return !Double.isNaN(load);
teichmann@7710:     }
teichmann@7710: 
teichmann@7710:     public boolean isValid() {
teichmann@7710:         return hasDiameter() && hasLoad();
teichmann@7710:     }
sascha@3281: }
sascha@3281: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :